2. RF Patent No. 2442797 for invention “HOMOOLIGOPHENOLFORMALDEHYDE PHTHALIDE-CONTAINING NOVOLAC BASED ON 3,3-BIS(4'-HYDROXYPHENYL)PHTHALIDE AS OLIGOMER FOR PRODUCTION OF CROSS-LINKED POLYMERS, A PROCESS FOR ITS PRODUCTION, COOLIGOPHENOLFORMALDEHYDE PHTHALIDE-CONTAINING NOVOLACS BASED ON ON 3,3-BIS(4'-HYDROXYPHENYL)PHTHALIDE AND PHENOL AS COOLYGOMERS FOR PRODUCTION OF CROSS-LINKED PHTHALIDE-CONTAINING COPOLYMERS, A PROCESS FOR THEIR PRODUCTION AND CROSS-LINKED PHTHALIDE-CONTAINING COPOLYMERS” (Inventors: V.K. Shitikov, L.N. Machulenko, S.N. Salazkin, A.I. Nechaev), granted 20.02.2012.

3. RF Patent No. 2442798 for invention “COOLIGOPHENOLFORMALDEHYDE PHTHALIDE-CONTAINING NOVOLACS BASED ON 3-PHENYL-3-(4'-HYDROXYPHENYL)PHTHALIDE AND PHENOL AS COOLIGOMERS FOR PRODUCTION OF CROSS-LINKED PHTHALIDE-CONTAINING COPOLYMERS, A PROCESS FOR THEIR PRODUCTION AND CROSS-LINKED PHTHALIDE-CONTAINING COPOLYMERS” (Inventors: L.N. Machulenko, S.N. Salazkin, A.I. Nechaev), granted 20.02.2012.